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Service Manual
Power Source
AC 220-240V, 50Hz.
Power Consumption
Average use: 41W
Standby condition: 1W
LCD
VGA (640 × 480 pixels)
4:3 aspect ratio LCD panel
Screen Size
408 mm(W) × 306 mm(H)
Sound
Speaker
9 cm × 5cm, 2pcs, 4Ω
Audio Output
4W (2W + 2W), 20% THD
Headphones
M3 (3.5 mm) Jack x 1
Receiving Systems/ Band name
VHF BAND I: CH2-CH4
BAND II: CH5-CH12
UHF HYPER BAND :SI'-S3', S1-S20
BAND IV, V : CH21-CH68
PAL-B/G, D/K, SECAM-L/L', NTSC(AV input only)
Aerial-Rear
UHF/VHF
TX-20LA60F
TX-20LA60P
TX-20LA6F
TX-20LA6P
SL-131PP Chassis
Operating Conditions
Temperature: -10°C ~ 40°C
Humidity: 0%-90% RH (non-condensing)
Connection Terminals
AV1 (Scart connecter)
21 Pin terminal (Audio/Video in, Audio/Video out, RGB in)
AV2
VIDEO
RCA PIN Type × 1
S-VIDEO
Mini DIN 4-pin
AUDIO L-R
RCA PIN Type × 2
Dimensions (W x H x D)
Including TV Stand
498mm(W) × 260mm(D) × 493mm(H)
TV Set Only
498mm(W) × 95mm(D) × 451mm(H)
Weight
10.9kg Net
Note:
Design and Specifications are subject to change without notice.
Weight and Dimensions shown are approximate.
© 2006 Matsushita Electric Industrial Co., Ltd.
All rights reserved. Unauthorized copying and
distribution is a violation of law.
ORDER NO. PCZ0610103CE
LCD TV
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Table of Contents
Related Manuals for Panasonic TX-20LA60F
Summary of Contents for Panasonic TX-20LA60F
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Page 1: Service Manual
ORDER NO. PCZ0610103CE Service Manual LCD TV TX-20LA60F TX-20LA60P TX-20LA6F TX-20LA6P SL-131PP Chassis Power Source Operating Conditions AC 220-240V, 50Hz. Temperature: -10°C ~ 40°C Humidity: 0%-90% RH (non-condensing) Power Consumption Connection Terminals Average use: 41W AV1 (Scart connecter) Standby condition: 1W... -
Page 2: Table Of Contents
TX-20LA6 TX-20LA60 CONTENTS Page Page 1. Safety Precautions ----------------------------------------------- 3 8. Service Mode Function ----------------------------------------13 1.1. General Guidelines -------------------------------------- 3 8.1. How to enter SERVICE --------------------------------13 1.2. Touch-Current Check ------------------------------------ 3 8.2. How to exit SERVICE ----------------------------------13 2. Prevention of Electro Static Discharge (ESD) to 8.3. -
Page 3: Safety Precautions
TX-20LA6 TX-20LA60 1. Safety Precautions 1.1. General Guidelines 1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed. -
Page 4: Prevention Of Electro Static Discharge (Esd) To Electrostatically Sensitive (Es) Devices
TX-20LA6 TX-20LA60 2. Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor „chip”... -
Page 5: About Lead Free Solder (Pbf)
TX-20LA6 TX-20LA60 3. About lead free solder (PbF) Note: Lead is listed as (Pb) in the periodic table of elements. In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu). That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available. -
Page 6: Self Check
TX-20LA6 TX-20LA60 4. Self Check 1. Self-Check is used to automatically check the bus lines and hexadecimal code of the TV set. 2. To get into the Self -Check mode press the Down ( ) button on the TV set, at the same time pressing the Recall ( button on the remote control, and the screen will show when the self Check is finished: Programm number Software Type... -
Page 7: Chassis Board Layout
TX-20LA6 TX-20LA60 5. Chassis Board Layout HEADPHONE ASSY TTL ASSY POWER SWITCH ASSY POWER MAIN ASSY MODULE LED ASSY CTRL ASSY Board Name Function MAIN ASSY Main Board CTRL ASSY Select Switch HEADPHONE ASSY Headphone socket LED ASSY Remote Receiver, LED POWER SWITCH ASSY Main power switch TTL ASSY... -
Page 8: Before Servicing
TX-20LA6 TX-20LA60 6. Before servicing 6.1. Wire dressing Check a wire dressing is same as illustrated below; Fix by tape P905 P502 P801 P502 P902 P803 P504 P601 PA09 P500 Fix by tape 6.1.1 Connection 1. Connect every connector surely as ilustrated above photo ( 2. -
Page 9: Disassembly For Service
TX-20LA6 TX-20LA60 7. Disassembly for service 7.2. Back cover 1. Remove stand ass’y (see 7.1.) 2. Remove the fixing screws (9pcs 7.1 Stand Ass’y 1. Lay down the main unit so that the back cover faces 3. Take out the Terminal Cover ( upward. -
Page 10: Ctrl Ass
TX-20LA6 TX-20LA60 7.3. CTRL Ass’y 7.5. LED Ass’y 1. Remove the back cover (see. 7.2.). 1. Remove the back cover (see. 7.2.). 2. Disconnect wires: CN2 and P504. 2. Disconnect wire: P501 3. Remove CTRL Panel Ass’y. 3. Remove screw (1 pcs 4. -
Page 11: Speaker (Left And Right)
TX-20LA6 TX-20LA60 7.7. Speaker (left and right) 7.9. Power Module 1. Remove the back cover (see. 7.2.) 1. Remove the back cover (see. 7.2.). 2. Disconnect wires: P601 and P602 2. Disconnect wires: P500, P502, P801 3. Remove screws (8 pcs 3. -
Page 12: Panel Lcd
TX-20LA6 TX-20LA60 7.11. Panel LCD 1. Remove the back cover (see. 7.2.) 2. Take out CTRL Panel Ass’y. 3. Take out TTL Ass’y. 4. Disconnect cables and unlock from clap wire: P401, P404, P405, P408, P501, P601, P602, PA09 5. Remove screws (12 pcs 6. -
Page 13: Service Mode Function
TX-20LA6 TX-20LA60 8. Service Mode Function MPU controls the functions switching for each IICs through IIC bus in this chassis. The following setting and adjustment can be adjusted by remote control in Service Mode. 8.1. How to enter SERVICE Simultaneously press MUTE button ( ) on remote control and program DOWN button ( ) on the TV set. -
Page 14: Option Description
10 = Alps FASTEXT Teletext PANEL 15:9 Not used Virtual 11 = Partsnic (FLOF) ON Enable 8.3.2 OPTION 2 PANASONIC Must be set Must be set Must be set remote Not used Not used Full ATSS to ‘0’ to ‘0’... -
Page 15: Conduct Views
TX-20LA6 TX-20LA60 9. Conduct Views 9.1. Foil Side... - Page 16 TX-20LA6 TX-20LA60...
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Page 17: Component Side
TX-20LA6 TX-20LA60 9.2. Component Side Part Location TRANSISTOR CRYSTAL QUARTZ I402 Q120 X201 I501 D3,E3 Q506 X501 I502 Q508 I503 E4,F4 Q602 I504 Q701 I508 D4,D5 Q702 I601 G5,H5 Q802 I603 G5,H5 Q803 I801 Q804 I803 Q805 I807 Q813 I809 Q814 I811 Q815... - Page 18 TX-20LA6 TX-20LA60...
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Page 19: Block And Schematic Diagrams
TX-20LA6 TX-20LA60 10. Block and Schematic Diagrams 10.1.Schematic Diagram Notes... -
Page 20: Block Diagram
TX-20LA6 TX-20LA60 10.2. Block Diagram... -
Page 21: Schematic Diagram
TX-20LA6 TX-20LA60 10.3 Schematic Diagram... - Page 22 TX-20LA6 TX-20LA60...
- Page 23 TX-20LA6 TX-20LA60...
- Page 24 TX-20LA6 TX-20LA60...
- Page 25 TX-20LA6 TX-20LA60...
- Page 26 TX-20LA6 TX-20LA60...
- Page 27 TX-20LA6 TX-20LA60 Notes...
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Page 28: Parts Location & Replacement Parts List
TX-20LA60 11. Parts Location & Replacement Parts List 11.1 Different Parts List Ref. No Part No. Part Name & Description Q’ty Remark DIFFERENCES FOR MODEL TX-20LA60F Exploded View 485209451400 MASK FRONT 20J2 FR HIPS BLACK-SILVER DMP4543300 S/PLATE TX-20LA60F see „Note”... -
Page 29: Exploded View
TX-20LA6 TX-20LA60 Part No. Part Name & Description Q’ty Remark 11.2 Exploded View 4855625300 MARK BRAND PANA 20W1 TBMA182 (W=50MM) MASK FRONT see ‚11.1 Different Parts List’ 4857818505 CLOTH BLACK CLOTH 420X8XT0.5 4857818506 CLOTH BLACK CLOTH 240X8XT0.5 4855556700 DECO SENSOR PC MILKY PTLEMSG159 LED ASSY... -
Page 30: Stand Assy Exploded View
FLT 4X10 MFZN WH 3CR 4857942701 RUBBER BK PHI 18X1.3T HRC 70-75 „Ref. Part No. Part Name & Description Q’ty Remark No” DMP5022500 PANASONIC TX-20LA6 485819D300DN PAD DOWN EPS 20J2 4858220001 BAG P.E. PE FOAM T0.5X800X800 485819D300UP PAD UP EPS 20J2 4858213801 BAG INSTRUCTION L. -
Page 31: Electrical Replacement Parts List
TX-20LA6 TX-20LA60 11.5 Electrical Replacement Parts List C276 HCQK221JBA C CHIP CERA 50V CH 220PF J 1608 „Ref. Part No. Part Name & Description Q’ty Remark No” C277 HCQK221JBA C CHIP CERA 50V CH 220PF J 1608 P501A 4850705S30 CONNECTOR YH025-05+YBH250-05+UL- BOARD- C505... - Page 32 TX-20LA6 TX-20LA60 C566 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 C820 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 C567 CEXF1H100V C ELECTRO 50V RSS 10MF (5X11) TP C821 CEXF1C222V C ELECTRO 16V RSS 2200MF(13X25)TP C568 HCBK104KBA C CHIP CERA 50V X7R 0.1MF K 1608 C822...
- Page 33 TX-20LA6 TX-20LA60 CA44 HCBK471KBA C CHIP CERA 50V X7R 470PF K 1608 L209 58C0000116 COIL BEAD HC-3550R CA451 HCBK392KBA C CHIP CERA 50V X7R 3900PF K 1608 L210 5CPZ479K02 COIL PEAKING 4.7UH 3.5MM K (LAL02TB) CA461 HCBK392KBA C CHIP CERA 50V X7R 3900PF K 1608 L213 5CPZ479K02...
- Page 34 TX-20LA6 TX-20LA60 Q802 T2SC2412KB TR CHIP 2SC2412KB R298 HRFT000-BA R CHIP 1/10 0 OHM 1608 Q803 T2SC2412KB TR CHIP 2SC2412KB R302 HRFT224JBA R CHIP 1/10 220K OHM J 1608 Q804 T2SC2412KB TR CHIP 2SC2412KB R303 HRFT224JBA R CHIP 1/10 220K OHM J 1608 Q805 T2SC2412KB TR CHIP...
- Page 35 TX-20LA6 TX-20LA60 R573 HRFT103JBA R CHIP 1/10 10K OHM J 1608 R805 HRFT103JBA R CHIP 1/10 10K OHM J 1608 R574 HRFT103JBA R CHIP 1/10 10K OHM J 1608 R807 HRFT103JBA R CHIP 1/10 10K OHM J 1608 R575 HRFT103JBA R CHIP 1/10 10K OHM J 1608 R808...
- Page 36 TX-20LA6 TX-20LA60 RA58 HRFT103JBA R CHIP 1/10 10K OHM J 1608 RA59 HRFT750JBA R CHIP 1/10 75 OHM J 1608 RA60 HRFT131JBA R CHIP 1/10 130 OHM J 1608 RA61 HRFT472JBA R CHIP 1/10 4.7K OHM J 1608 RA62 HRFT103JBA R CHIP 1/10 10K OHM J 1608 RA68...